Senior Systems Administrator

Parallax Advanced Research is an Equal Opportunity Employer, drug free workplace, and complies with ADA regulations as applicable.

Senior Systems Administrator

11-1-26

Exempt

Full-Time

On-Site

Parallax HQ: 4035 Colonel Glenn Hwy, Beavercreek, OH 45431, or Huntsville, AL [TBD]

The Parallax Advanced Research mission is to deliver innovative research and provide technology, human, and business solutions through The Science of Intelligent Teaming™ for government, industry, and academic clients.

The Senior Systems Administrator leads the administration, security, reliability, and modernization of the enterprise server and computing infrastructure that supports Parallax corporate operations, research laboratories, data centers, and government-sponsored programs. This role serves as the senior technical escalation point for server and infrastructure issues, drives infrastructure projects, shares expertise with less experienced administrators, and partners with cybersecurity and engineering staff to protect sensitive systems and Controlled Unclassified Information (CUI).

This is an individual contributor position with no supervisory responsibilities.

The essential functions include, but are not limited to the following:

• Lead deployment, administration, and lifecycle management of Windows Server and Linux systems across physical, virtual, and isolated research environments.
• Administer Active Directory, Group Policy, DNS, DHCP, identity services, file permissions, certificates, and secure authentication, and support Entra  hybrid identity.
• Maintain VMware vSphere/ESXi, vCenter, Hyper‑V, or comparable platforms, including clustering and high availability.

• Manage enterprise storage, SAN/NAS connectivity, server hardware, and backup and replication platforms.
• Test restores and disaster recovery procedures on a regular schedule and keep recovery plans current.

• Lead operating system patching, firmware upgrades, configuration management, vulnerability remediation, and secure baseline implementation.
• Implement system security controls supporting CUI protection, NIST SP 800-171, CMMC Level 2, and applicable federal and contract requirements.
• Partner with cybersecurity staff on logging, endpoint protection, access reviews, incident response, and STIGs.
• Provide documentation and evidence for internal audits, customer reviews, and compliance assessments.

• Serve as the senior escalation point for critical server incidents and lead root cause analysis and fixes.
• Automate administration and standard deployments with Power Shell, Bash, Python, Ansible, or comparable tools, and maintain monitoring and alerting.
• Follow change management procedures for planned changes and maintenance windows, including after-hours work.

• Lead infrastructure refreshes and capacity planning, and maintain diagrams, inventories, and procedures.
• Evaluate products, work with vendors, and manage server hardware and software lifecycle, warranties, and licensing.
• Share technical expertise with less experienced administrators.
• Follow all requirements for handling CUI and classified information and systems.
• Other duties as assigned.

• Bachelor's degree in computer science, Information Technology, Cybersecurity, or a related field; equivalent professional experience may be considered.
• 8+ years of progressively responsible enterprise systems administration experience, including leading complex infrastructure initiatives.
• Advanced…